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Iranian Journal of Chemistry and Chemical Engineering، جلد ۳۹، شماره ۳، صفحات ۱۵۹-۱۷۳
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عنوان انگلیسی Solar Photocatalytic Degradation of Diclofenac by N-Doped TiO2 Nanoparticles Synthesized by Ultrasound
چکیده انگلیسی مقاله Anatase N-doped TiO2 nanoparticles were synthesized using ultrasound at low frequency and room temperature. The samples characterized by techniques including XRD, TEM, HRTEM, FT-IR, XPS, and UV–Vis spectroscopy. XPS indicated the existence of nitrogen as an anion dopant within the TiO2 lattice. The solar photocatalytic activity of N-doped TiO2 studied for the degradation and complete mineralization of Diclofenac (DCF). The results showed that the catalytic activity of the nanoparticles related to the operating conditions in the synthesis such as temperature and time of sonication. DCF degradation followed the pseudo-first-order kinetics model under different conditions. Results showed that photogenerated electrons on the catalyst surface played an important role in the mechanism of photocatalytic degradation of DCF. It also confirmed that in the presence of oxygen, the formation of oxidative species such as singlet oxygen and superoxide radicals had major roles in the degradation of DCF.
کلیدواژه‌های انگلیسی مقاله Ultrasound,N-doped TiO2 nanoparticles,Photocatalytic degradation,Diclofenac,Mineralization
نویسندگان مقاله Sara Ramandi |
Sonochemical Research Center, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN

Mohammad H. Entezari |
Sonochemical Research Center, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN

Narjes Ghows |
Sonochemical Research Center, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN

نشانی اینترنتی https://ijcce.ac.ir/article_34297_72c357f4ae23b526ec2f47c15b99b444.pdf
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